Apparently, Divinity 2 has some kind of stuttering going on, making things look much worse than the actual framerate. This is not part of the game like the poor choice to lock the main menu at 30fps (which then unlocks once you’re in game, just like Enemy Territory Quake Wars).

Luckily, there’s a simple fix. If you haven’t seen this posted around, what you do is go to the compatibility tab in the properties window of the game’s exe and check on ‘disable desktop composition‘. I don’t think ‘run as administrator’ is needed, but you can check that on in addition to the desktop composition toggle.

No idea how widespread this is, if it’s just for Windows 7/Vista, or if it includes Nvidia cards, or if it’s tied to specific generations or drivers.